CFG桩复合地基边桩效应分析  

Analysis of Side-pile Effects of CFG Composite Foundation

作　　者：赵松涛[1] 王凤池[1] 杨建华[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《岩土工程技术》2008年第2期97-100,共4页Geotechnical Engineering Technique

基　　金：辽宁省自然科学(博士启动)基金项目(20061001);建设部科技计划项目(06-K1-6)

摘　　要：CFG桩复合地基是软土地基处理中的一种较为有效的方法,近年来得到广泛的应用。通过有限元分析程序对CFG桩复合地基边桩效应进行分析,讨论边桩对CFG桩复合地基沉降、土体应力和承载力的影响。分析表明由于边桩的存在,限制了桩间土体的侧向挤出,减小了土体的竖向位移。同时,边桩增大了附加应力影响范围,能够在一定程度上提高复合地基的承载力,并促进了桩间土承载潜力的发挥。GFG composite foundation is an effective method of handling soft ground and is widely applied. Analyzing the side-pile effect of CFG composite foundation by finite element analysis program and discussing the effect of subsidence , stress in soil mass and bearing capacity of the side-pile to CFG composite foundation. The analysis indicates that the side-pile confine the extrusion of soil and diminish vertical displacement. Meanwhile, side-pile augment the effective extension of additional stress, could enhance bearing capacity and promote exertion of the bearing potential of the soil among the piles.

关 键 词：CFG桩复合地基 边桩 有限元 

分 类 号：TU44[建筑科学—岩土工程]